Huller rib for double-rib huller gins



I Dec. 28 ,1926.

' E. MUNGER HULLER 1B FOR DOUBLE RIB HULLER ems 2 Sheets-Sheet 1 Filed August a i925 V awenlcz EUGENE MUNQER Chrom Dec. 28, 1926. 1,612,204

E MUNGER I HULLER RIB FOR DOUBLE RIB HULLER GINS Filed August 8 1925 2 Sheets-Sheet mentm an GENE MUNQER Patented Dec. 2%, i926.

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EUGENE HUNGER, 0F BIRMINGHAM, ALABAMA, AS$IGNOB T0 CONTINENTAL GIN COMPANY, A CGRPOBATION OF DELAWARE.

HULIJER RIB FOB DOUBLE-RIB HIULLER GINS.

Application filed August 8, 1925.

My invention relates to certain new and useful improvements in huller ribs for use in double rib huller gins, and its object is to so design the upper portion of the rib between which the saw teeth pass and through which the cotton is drawn, that it will produce a clearance which will avoid choking and which will at all times permit the cotton, not drawn into the roll box by engagement with the saw teeth, to travel upwardly and backwardly through an increased clearance in its return to the huller breast.

A further object is to so design the working portion of the rib that its depth, along a plane tangent to the saw, materially exceeds the maximum length of the fiber to the end that there shall be no tendency of the fiber to wrap over or become tight around the rib.

The means by which the ends aforesaid are obtained will be better understood by reference to the following specification and to the accompanying drawings which form a part thereof and which illustrate only the preferred embodiment of my invention.

In the drawings 1 is a vertical cross-sectional view through a portion of a double huller rib gin showing the working elements with which my improved type of rib is associated.

Fig. 2 is an enlarged view in side elevation of the upper working end of the rib.

Fig. 3 is a cross-sectional view through the rib taken on the line III-III of Fig. 2.

Fig. 4: is a cross-sectional view taken through a pair of ribs on the curved line IVIV of Fig. 2 and graphically illustrating the increasing clearance through which the cotton, returning to the huller breast,

travels in its passage between the ribs.

Fig. 5 is a front elevation of several ribs in accordance with my invention.

Fig. 6 is a plan view of Fig. 5 with the middle rib broken away and shown in cross section on the plane VI-VI of Fig. 5.

Fig. 7 is an enlarged side view of the rib associated with the saw and illustrating the angular relating between the saw teeth and the working face of the rib.

Fig. 8 is an enlarged fragmentary detail view, in rear elevation, of the upper working end of the rib.

Similar reference numerals refer to similar parts throughout the drawings.

In the embodiment of my invention illus- Serial No. 48,995.

trated, I show a double rib huller gin having a roll box 1, a saw 2, a dotting brush 3, a moteboard 4, ginning ribs 5, hulling ribs 6, a huller breastl', and a spiked huller roller 8.. All of the parts as thus described are of conventional construction with the exception of the huller ribs 6 which will now be described.

The huller rib 6, in accordance with the general practice, has a lower end 9 adapted to be bolted to the bottom rib rail 10 and at its upper end 11 has a pair of bolt holes therethrough serving to receive the bolts by means of which it is secured to the upper rib rail 12. The working portion of the rib, which is illustrated more clearly in Fig. 2, comprises a body portion, of materially great-er width from front to rear than is usual in the huller ribs for double rib huller gins, having a front working face or shoe 13 P in engagement with the latter between the huller ribs. Beyond these sharply beveled faces 15, the rib continues to taper or be reduced in cross section to its back edge. In the same manner the rib considered in a cross section along the line VIVI see Fig. 6, will taper from its back edge to its front discharge edge 14-. The rib considered in the curvilinear cross section IVIV, see Fig. 4, which follows the path of the cotton, not engaged by the saw teeth, in its return to the huller breast, will be shown to provide a clearance which is continually enlarged from the intake to the discharge end of the passage and it is especially to be noted that this clearance increases abruptly from the working faces 13 of the ribs. The depth of the rib along the plane IIIIII of Fig. 2 materially exceeds that customary for this type of huller rib, the object being to provide a rib the depth of which at this point exceeds the ordinary length of the fiber to be ginned. It will also be noted that the curve of the working face 13 opposite the teeth 16 of the saw is such that it forms an acute angle with the tooth as the latter passes the working face of the rib. The importance of this is more clearly shown in Fig. 7, where it will appear that the ribs will not gin the cotton nor cause the saw to break it but will cause the teeth of the saw to push all but the locks actually engaged by it outwardly and up wardly into the curvilinear return passage which follows the line 1V1V, thus insuring apositive actuation and a free passage for this cotton returning to the huller breast 7.

In operation, as the saws work between the ribs 6, the hulls will be arrested by the working faces 13 and fall back to the huller roller 8 by which they are discharged between the roller and rail 10. The cotton engaged by the saw teeth or drawn by them between the ribs enters a clearance that widens abruptly towards the center of the rib so that an immediate release from pres sure is afforded the cotton as soon as it has passed the face of th ribs. The surplus or unginned cotton, i. e., that part of the cotton which is held to the cotton engaged by the teeth of the saws through contact of the fibers on the separate locks, is checked in its travel and detached from the cotton engaged by the saw as the latter starts to enter the ribs and this surplus cotton passes back into the chamber in front of the hulling ribs along the path IV-JV, Fig. 2, which is a path having a constantly increas ing clearance towards its discharge end from whence the cotton is again delivered into the huller breast. By this arrangement the cotton returning to the huller breast and passing to the roll be will. have decreasing friction and compression throughout its travel between the ribs and the latter will thus not become choked. V In other words, in whatever direction cotton will normally travel through the ribs it will have increasing clearance. Moreover, the width of the ribs along the line III III is such as to prevent standard cotton of the longest known fiber from choking-in the manner known as tight around the rib which occurs when locks on both sides of the rib become fastened together by their fiber interlocking beyond the back of the rib. The angle at which the saw teeth pass the rib is such as to avoid ginning of the cotton at this point and to help to promote faster and better ginning in the roll box.

All paths normally followed by cotton passing between the ribs are paths which 7 have an increased clearance relative to the clearance between the rib faces 13. and preferably such clearances continually increase along the cottons path, but the abrupt increase of the clearance obtained by the faces 15 gives relief from pressiu'e to the cotton and approximately satisfactory results flow from ribs which maintain such a clearance to the cotton discharges and such construction comes within the broad contemplation of my claims.

Though I have described with great particularity the details of the embodiment of the invention herein shown, it is not to be construed that i am limited tl ereto, as changes in arrangement and substitution of equivalents may be made by those skilled in the art without departing from the invention as defined in the appended claims.

Having tl us described my invention, what I claim as new and desire to secure by Letters fatent, is:

l. A huller rib f r double rib huller gins,

' in a plane tangent to the saw at its intersection with said rib, a cross-section which is abruptly tapered behind its working face ans decreases in width to its back edge, and having progressively decreasing width, and progressively increasing depth of its tapered body portion, in a line following the path of the return of surplus seed cotton between ribs to the huller breast.

2. A huller rib for a double rib huller gin, comprising ends for attachment to the rib rails, and a substantially concave working portion which is wider at the front than at the back, and which tapers slightly at each side towards its upper end from a point near the middle of the rib, there being an abrupt decrease in width immediately behind the front face, and a continuing decrease in width along all paths of movement followed by the seed cotton in its advancement longitudinally of and away from the rib.

3. In a double rib huller gin, saws, a set of huller ribs disposed between the saws and having working faces which are wider at the front than at the back, the ribs having a cross sect-ion which provides, along all of the paths followed by the seed cotton moving between them both to the huller breast and the ginning breast, a clearance that materially increases throughout relative to the clearance between the working faces of the ribs. from between the two points at which the periphcry of the saw passes the rib, in the direction of advancement of the cotton along said paths.

l. In a double rib huller gin, saws, a set of huller ribs disposed between the saws and having working faces which are wider at the front than at the back, the ribs having a cross section which provides, along all of the paths followed by the seed cotton moving between them, a constantly increasing clearance from between the two points at which the periphery of the saw passes the rib in the direction of advancement of the cotton along said paths.

5. In a double rib huller gin, saws, a set of huller ribs disposed between the saws and having working faces which are wider at the front than at the back, the ribs having a cross section which provides, along all of the paths followed by the seed cotton moving between them, a clearance which first increases rapidly and then continues without decrease from between the two points at which the periphery of the saw passes the rib to the discharge point for the several paths of the cotton.

6. A huller rib for double rib huller gins having a concave working face terminating in an upturned substantially straight edge facing the huller breast, the thickness of said concave face being gradually reduced from the working position of the saws upwardly towards said edge, and the web of the rib behind the concave face being reduced in thickness transversely across the rib and upwardly in a curvilinear direction to said edge, said edge being sharply reduced in thickness commencing just above the work ing face of the rib and continuing throughout the major portion of said edge.

7 A huller rib for double rib huller gins having opposite the upper periphery of the saws a body portion with a concave working face of materially greater depth than that of other portions of the rib terminating at the base of an upright edge facing the huller breast, said deepened body portion back of said working face having relative to such face a decreased thickness which continues across the rib in the direction of the flow of seed cotton following the saws into the gin breast and also in the direction of the flow of seed cotton which is forced back past said straight edge into the huller breast, the reduced body portions of adjacent ribs providing a continuous enlarged clearance for the free flow of seed cotton that has passed the working faces to the hulling and ginning breasts.

.In testimony whereof I affix my signature.

EUGENE MUNGER. 

